Crushing-rolls.



No; 826,140. f PATENTEDJULY 17, 1906. W. G. BRYANT.

ORUSHING ROLLS.

APPLICATION FILED OUT-27. 1905.

2 SHEETS-SHEET 1'.

lnvefit'or. h by I] I Attorneys rm: "ohms PETERS cm, wAsl-nncrou, a. c.

N0. 826,140. PATENTED JULY 17, 1906.

. W. G. BRYANT.

GRUSHING ROLLS.

APPLICATION FILED OCT-27, 1905.

2 SHEETS-SHEET 2.

- Witnesses yaezfiwentor Attorneys THE NORRIS PITIRI co, wunmamu, n c.

UNITED STATES PATENT OFFICE.

WALTER GUY BRYANT, OF GARTERVILLE, MISSOURI.

CRUSHlNG-ROLLS.

Specification of Letters Patent.

Patented July 17, 1906.

Application filed October 27,1905. Serial No. 284,753.

A further object of the invention is to pro-- vide a mounting or supportfor the movable roll in which both the lower sills or bed-rails and thesliding roll-carrying boxes are providedwith wear-plates which may berenewed from time to time as required, there being no wear whatever onthe bed-plate or boxes. I

With these and other objects in view, as will more fully hereinafterappear, the invention consists in certain novel features of constructionand arrangement of parts hereinafter fully described, illustrated in theaccomp anying drawings, and particularly pointed out in the appendedclaims, it bein understood that various changes in the orm, proportions,size, and minor details of the structure may be made without departingfrom the spirit or sacrificing any of the advantages of the invention.

In the accompanying drawings, Figure 1 is a side elevation, partly insection, of a crushing-roll constructed in accordance with theinvention. Fig. 2 is a plan view of the same. Fig. 3 is a detailperspective View of a portion of one of the sills or rails on thebed-plate, showing the detachable wear-strips carried thereby. Fig. 4 isa detail transverse section through one of the bed-rails and boxes.

Similar numerals of reference are employed to indicate correspondingparts throughout the several figures of the drawings.

The frame of the mill includes a pair of bed rails or sills 10, that areproperly supported in spaced relation, and each is provided with a rigidpillow-box 11, carrying a fixed bushing 12 for the reception of theshaft 13 of one of the rolls 14. The shaft is mounted eccentrically withrespect to the bushin 12, the latter being so arranged that the thickestportion of the bushing, or that portion exposed to the greatest wear,shall be opposite the line of initial thrust from material passingbetween the rolls. On this shaft is secured a gear 15, that is driven bya pinion 16, mounted on a driving-shaft 17, the latter being providedwith a suitable belt-pulley 18, to which power may be transmitted in theordinary manner.

The sills or rails are each provided with a vertically-projecting rib22, which fits into a suitable groove formed in the lower face of adetachable guide-bar 23, that is held in place by bolts 24, the heads ofthe bolts being disposed in recesses, the sills and the upper endsthereof receiving nuts that fit in suitable represses formed in theguide-bar, as shown in The guide-bar is provided with laterallyextendedflanges 23, that fit into recesses formed in slidable pillow-boxes 25,and the lower edges of said pillow-boxes have inturned flanges26, thatfit in the spaces between the flanges 23 and the upper surface of thesills proper, so that said pillow-boxes are firmly held from eitherlateral or vertical play, but are free to slide toward and from thestationary pillow-boxes 11.

The upper face of the guide 23 is provided with two or more parallelrecesses, in which are placed removable wear-strips 28, and in the lowerface of each slidable pillow-box are arranged recesses for the receptionof the wear-strips 29, all of the wear-strips being reversible andloosely. held within their recesses in order to permit ready renewal incase of wear. These strips are held from independent longitudinal playby the end walls of the recesses in which they are seated, and auxiliaryfastening devices are not necessary.

The pillow boxes 25 are provided with bushings 12 for the reception ofthe shaft 31 of a crushing-roll 32, which coacts with the roll 14 in thereduction of the material.

Near the end of each sill is secured a bracket 35, that is rigidlybolted in place and is provided with an enlarged opening for the freepassage of a threaded bolt 36, the inner end of which is firmly lockedto the slidable pillow-box 25. On the outer portion of the bolt isarranged a nut 37, which by contact with the outer face of the bracket35 limits the extent of inward movement of the roll32,

and by adjusting this nut the rolls may be maintained in spacedrelation, if desired.

The upper portion of the bracket 35 is provided with a slightly-recessedhead 40, which in connection with a recessed disk 41, loosely mounted onthe bolt 36, forms a support for a helical compression spring 42, andthe stress of the spring may be adjusted by a nut IIO 43, which islocked in adjusted position by a nut 44. The springs tend to force themovable roll 32 against the relatively fixed roll 14, and the forceexerted by the springs may be adjusted in accordance with the characterof the material being operated upon.

The rolls are inclosed in a suitable housing 45, having a feed-op ening46, which may communicate with a suitable hopper, and the housing isformed in sections, so that it may be readily removed when necessary.

A pair of rolls constructed in accordance with this invention may bequickly adjusted in accordance with the character of the ma terial to beoperated upon, and all portions of the device are readily accessible forrenewal or repair. By providing the wearstrips between the sills orrails of the frame and the movable pillow-boxes the frame andpillow-boxes may be used for an indefinite period without any wearwhatever, it being merely necessary to renew the strips from time totime.

Having thus described the invention, what is claimed is 1. In acrushing-mill, a frame including a pair of longitudinal sills, rigidpillow-box bases carried thereby, a roll j ournaled in said pillow-boxbases, a flanged guide-bar carried by each sill and having a recessedupper face, wear-strips seated in the recesses, slidable pillow-boxbases mounted on said guide-bars and having inturned flange portionsembracing the same, said slidable pillow-box bases being also recessed,wear-strips arranged in the recesses of the slidable pillowbox bases andbearing against the corresponding strips of the guide-bars, a roller journaled in the slidable pillow-box bases, and springs engaging saidslidable pillow-box bases and tending to force the rolls intoengagement.

2. In a crushing-mill, a frame including a pair of parallel sillmembers, pillow box bases rigidly secured thereto, a roll journaled insaid pillow-box bases, flanged guide-bars carried by the sills andprovidedwith recesses in their upper faces, reversible wear-stripsdisposed in said recesses, slidable pillow-box bases mounted on theguide-bars and having recesses in their lower faces, reversiblewearstrips seated in the recesses of the slidable pillow-box bases andbearing against the corresponding wear-strips of the guide-bars, asecond roller journaled in the slidable pillowbox bases, and springsacting on said slidable pillow-box bases and tending to force the rollsinto engagement.

3. In a crushing-mill, a frame including a pair of longitudinal sills,each of which is provided with a vertically-proj ecting rib, guidebarsrecessed for the reception of said ribs and provided withlaterally-extended flanges, means for securing the guide-bars to thesills, slidable pillow-box bases having inturned flange portionsembracing the flanges of the guide-bars, a roll journaled in saidslidable pillow-box bases, and a relatively stationary roll havingbearings in a fixed portion of the frame.

In testimony that I claim the foregoing as my own I have hereto affixedmy signature in the presence of two witnesses.

WALTER GUY BRYANT.

Witnesses:

CARL O. OAss, F. B. LooMIs.

